# Celestia - Bridge Node

Type of node: **Bridge Node**

ChainID: **mocha-4**

## Resources

|         |                                         |
| ------- | --------------------------------------- |
| Website | <https://celestia.org/>                 |
| Github  | <https://github.com/celestiaorg/>       |
| x.com   | <https://x.com/CelestiaOrg>             |
| Discord | <https://discord.com/invite/YsnTPcSfWQ> |
| Docs    | <https://docs.celestia.org/>            |

## Hardware requirements

<table data-view="cards"><thead><tr><th>CPU</th><th>RAM</th><th>Storage</th><th>Network</th><th>OS</th></tr></thead><tbody><tr><td>8 cores</td><td>64 GB</td><td>10 TB SSD</td><td>1 Gbps</td><td>Linux (Ubuntu 20.04 x64)</td></tr></tbody></table>

## Installation 💾

Install dependencies

```bash
sudo apt update && sudo apt upgrade -y
sudo apt install curl git wget htop tmux build-essential jq make gcc tar clang pkg-config libssl-dev ncdu -y
```

Install GO 1.22.2

```bash
sudo rm -rf /usr/local/go && \
curl -L https://go.dev/dl/go1.22.2.linux-amd64.tar.gz | sudo tar -xzf - -C /usr/local && \
echo 'export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin' >> $HOME/.bash_profile && \
source .bash_profile && \
go version
```

Install celestia-node

```bash
cd $HOME
rm -rf celestia-node
git clone https://github.com/celestiaorg/celestia-node.git
cd celestia-node/
git checkout tags/v0.28.4-mocha
make build
sudo make install
make cel-key
```

Init app

{% hint style="info" %}
you can find other core-ip if this one stops working - <https://docs.celestia.org/nodes/mocha-testnet#rpc-endpoints>
{% endhint %}

```bash
celestia bridge init --core.ip full.consensus.mocha-4.celestia-mocha.com --p2p.network mocha
```

Next, we get the address of the wallet to be funded. To pay for transactions

```bash
cd $HOME/celestia-node
./cel-key list --node.type bridge --keyring-backend test --p2p.network mocha
```

Request tokens from the faucet 🆓

> Request tokens from discord "faucet" channel <https://discord.com/invite/YsnTPcSfWQ>

Create service file

```bash
sudo tee /etc/systemd/system/celestia-bridge.service > /dev/null <<EOF
[Unit]
Description=celestia Bridge
After=network-online.target

[Service]
User=$USER
ExecStart=$(which celestia) bridge start \
--p2p.network mocha --archival \
--metrics.tls=true --metrics --metrics.endpoint otel.mocha.celestia.observer
Restart=on-failure
RestartSec=3
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF
```

Enable and start service

```bash
sudo systemctl daemon-reload
sudo systemctl enable celestia-bridge && sudo systemctl restart celestia-bridge && sudo journalctl -u celestia-bridge -f
```

**Get your node's peerID**

```bash
NODE_TYPE=bridge
AUTH_TOKEN=$(celestia $NODE_TYPE auth admin --p2p.network mocha)

curl -X POST \
     -H "Authorization: Bearer $AUTH_TOKEN" \
     -H 'Content-Type: application/json' \
     -d '{"jsonrpc":"2.0","id":0,"method":"p2p.Info","params":[]}' \
     http://localhost:26658
```

Get NodeID

```bash
celestia p2p info --node.store $HOME/.celestia-bridge-mocha-4/
```

## Useful commands ⚙️

Check bridge node status

```bash
celestia header sync-state --url "http://127.0.0.1:26657" --node.store $HOME/.celestia-bridge-mocha-4/
```

Check bridge wallet balance

```bash
celestia state balance --url "http://127.0.0.1:26657" --node.store $HOME/.celestia-bridge-mocha-4/ 
```

## Upgrade Bridge Node

Stop bridge node

```bash
sudo systemctl stop celestia-bridge
```

Download and install new binary

```bash
cd $HOME
rm -rf celestia-node
git clone https://github.com/celestiaorg/celestia-node.git
cd celestia-node/
git checkout tags/v0.25.2-mocha  
make build 
sudo make install 
make cel-key
```

Update config

```bash
celestia bridge config-update --p2p.network mocha
```

Start bridge node

```bash
sudo systemctl restart celestia-bridge && sudo journalctl -u celestia-bridge -f
```

## Delete node 🗑️

```bash
sudo systemctl stop celestia-bridge && sudo systemctl disable celestia-bridge
sudo rm /etc/systemd/system/celestia-bridge*
rm -rf $HOME/celestia-node $HOME/.celestia-app $HOME/.celestia-bridge-mocha-4
```


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